Car-truck.



H. E. DOBRR.

GAR TRUCK.

APPLIOATION FILED M1026, 191s.

1,097,969y n i PateutdlMay2 6,1914.l

"Unrrnn sTaTns TAT-nner voTraficn nanna' n. nonna, or str. Louis,Missennrfnssrsnon To scULLrieGaLLaer-rnn :mon a STEEL COMPANY, or sr.Louis, aarssounr, a conronarron or Ivrrssouni'.

CdR-TRUCK.

Specification of Letters atent.

Application led December 26, 1913. Serial No. 808,838.

Toa/ll 'to/710m, t may concern:

Be it known that I, HARRY E. Donna.. a citizen of the United States,residing at St. Louis, Missouri, have invented a certain new and usefulImprovement in Car-Trucks, of which the following is a full, clear, andexact description, such as will enable others skilled in the art towhich it appertains to make and use the same.

This'invention relates to car trucks, and more particularly to the meansused in car trucks of the cast metal type for securing the spring` plankand spring seat to the side frames.

The general practice in building car trucks of the type referred to isto connect the spring plank to the side frames by means of a pluralityofv rivets.' ln order to remove the bolster from the truck, it isnecessary to first remove the spring plank, so that the' bolster-may bedropped down sufficiently low tof-permit of its withdrawal through theusual enlarged lower' portion of the bolster-receiving opening.Consequently, a' great` amount of time and labor is expended in cuttingor shearing ofi' vthe rivet-heads that connect the spring plank to theside frames whenever the bolster of the l truck has to be removed. Thespring seats in trucks of this type are usually formed of wood and restdirectly on'the spring plank in the bolster-receiving opening, andconsequently must be recessed or cut out at numerous places in thebottom face thereof, so as to clear the rounded rivet-heads that connectthe spring plank to the side frames,

in order to have a perfectly fiat bearing on the spring plank.

The main' object of my invention is to provide a car truck of the typereferred to in which the spring plank is connected to the side frameswithout the aid of rivets or similar fastening devices, thereby'enabling it toV be readily removed therefrom, Whenever it is desired toremove the bolster I or dismantle the truck, without having to cut oifor drive out any fastening devices.

Another object is to provide a car truck of the class described in whichthe springse'ats are, provided with only one cut-out portion in theirlower faces, instead of the numerous cut-out portions that haveheretofore been necessary, in order to clear the usual fasteiingdevices.

Anotherlobject is to provide a car truck `ance with my invention; Fig. 2is a horizontal sectional view taken on the line 2-2 of Fig. l; and Fig.3 is a verticai sectional 'view taken on the line 3 3 of Fig. l.

Referring to the drawings which illustrate the preferred form of myinvention, A. esignates a cast metal side frame that is provided witha-.\bolsterreceiving opening l, in which are arranged the bolster 2,bolster-supporting springs 3, spring-seat 4, and the spring-plank 5. Thebolster 2 may be of any approved construction and is provided with theusual column guides -6 that coperate with the side walls or columns 7 inthe upper portion of the opening 1, and the lower portion of saidopening is slightly enlarged, the widthof this portion being slightlygreater than the width of the bolster through the column-guides 6; sothat, in assembling the truck the bolster may be inserted throughthisenlarged portion and then raised upwardly until it lies between thecolumns 7, the spring-plank, spring-seat,

and supporting springs being thereafter placed in position, as shown inFig. l. Co-

operating means on the side frame and on the spring-plank are providedfor maintaining said parts in operative position, said means consistingof a projection on one of said parts that coperaties with a recess onthe other of said parts. In theembodiinent of my invention, hereinshown, this means consists of a boss or projection 8, arranged in thebottom of the openingl of each of the side frames, and a coperatingrecess or perforation 9, formed in the spring-plank, adjacent eachendthereof. The projections 8 are preferably non-circular or elongatedin plan view, as shown clearly in Fig. 2, so as 'to overcome anytendency of the springplank to twist with-respect to the side frame; anda bead or flange 9a is preferably pressed or struck up from thespring-plank it around the margins of the perforation 9 so as tostrengthen and reinforcethe springplank at this point.

The spring-seat 5 is provided on under ros i side with a cut-out portionor recess thatl fits over the projection 8 and'surrounding flange 9a, inorder that said spring-seat may rest or bear firmly on the spring-plank4.

'Virhile I have herein described the spring-v in the lowerportionthereof, a pressed metal spring-plank. provided adjacent each endwith a perforation that coperates With said projection, and a iiangesurrounding the marginal edges of said perforation.

2. In a car truck, a pair of side frames, each of which is providedwitha projection in the lower portion thereof, a pressetl metal`lspziing-planl-r provided adjacent each end with a perforation thatcooperates with said projection, a flange surrounding the mar- ,tionarranged in thelowcr portion of said ginal edges of said perforation,and a spring-sat that rests on said spring-plank and is provided with arecess that receives said projection and flange.

3. In a car truck, a side frame. provided With a bolster receivingopening., a projecopening, a spring-plank provided with a recess thatcoperates with said projection, a projcction on said spring-plank, and aspring-seat provided with a recess that c0- operates with saidlast-named projection.4

4. In a car truck, a side-frame provided with a bolsterreceivingopening, a projection arranged in' the lower portion of said opening, aspring-plank provided with an opening that ccperates with saidprojcction, almarginal flange on said spring-plank that surrounds saidopening, and a spring scat provided With a recess into which said flangeprojects.

In testimony whereof I hereunto affix myL signature in the presence oftwov witnesses, this 22nd day of December 1913.

' HARRY E. DOERR.

` Witnesses:

HARRY C. DicniUss, CHARLES I. GORMAN.

